#include <stdio.h>

#define PRINTX printf("%d\n", x)

main() {
    int x = 2, y, z; 

    x *= 3 + 2; PRINTX; // x == 30
    x *= y = z = 4; PRINTX; // x == 4
    x = y == z; PRINTX; // x == 1
    x == (y = z); PRINTX; // x == 1
}
